63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_SourceLocation_h
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#define mozilla_SourceLocation_h
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#include "nsString.h"
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#include "mozilla/Variant.h"
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#include "nsCOMPtr.h"
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struct JSContext;
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class nsIURI;
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namespace mozilla {
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struct SourceLocation {
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mozilla::Variant<nsCString, nsCOMPtr<nsIURI>> mResource{VoidCString()};
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uint32_t mLine = 0;
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uint32_t mColumn = 1;
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SourceLocation();
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explicit SourceLocation(nsCString&&, uint32_t aLine = 0, uint32_t aCol = 1);
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explicit SourceLocation(nsCOMPtr<nsIURI>&&, uint32_t aLine = 0,
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uint32_t aCol = 1);
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~SourceLocation();
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bool IsEmpty() const {
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return mResource.is<nsCString>() ? mResource.as<nsCString>().IsEmpty()
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: !mResource.as<nsCOMPtr<nsIURI>>();
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}
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explicit operator bool() const { return !IsEmpty(); }
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};
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struct JSCallingLocation : SourceLocation {
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const nsCString& FileName() const { return mResource.as<nsCString>(); }
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static JSCallingLocation Get();
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static JSCallingLocation Get(JSContext*);
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class MOZ_STACK_CLASS AutoFallback {
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public:
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explicit AutoFallback(const JSCallingLocation* aFallback)
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: mOldFallback(GetFallback()) {
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SetFallback(aFallback);
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}
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~AutoFallback() { SetFallback(mOldFallback); }
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private:
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const JSCallingLocation* mOldFallback;
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};
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private:
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static const JSCallingLocation* GetFallback();
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static void SetFallback(const JSCallingLocation*);
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};
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} // namespace mozilla
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#endif
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